EP0369222A3 - Monitoring valve for control valves, especially for trailer control valves in brake systems of utility vehicles - Google Patents

Monitoring valve for control valves, especially for trailer control valves in brake systems of utility vehicles Download PDF

Info

Publication number
EP0369222A3
EP0369222A3 EP19890119903 EP89119903A EP0369222A3 EP 0369222 A3 EP0369222 A3 EP 0369222A3 EP 19890119903 EP19890119903 EP 19890119903 EP 89119903 A EP89119903 A EP 89119903A EP 0369222 A3 EP0369222 A3 EP 0369222A3
Authority
EP
European Patent Office
Prior art keywords
piston
control valves
valve
pressure
control valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19890119903
Other languages
German (de)
French (fr)
Other versions
EP0369222B1 (en
EP0369222A2 (en
Inventor
Christian Fuchs
Karl Heinz Tischler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knorr Bremse AG
Original Assignee
Knorr Bremse AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Knorr Bremse AG filed Critical Knorr Bremse AG
Publication of EP0369222A2 publication Critical patent/EP0369222A2/en
Publication of EP0369222A3 publication Critical patent/EP0369222A3/en
Application granted granted Critical
Publication of EP0369222B1 publication Critical patent/EP0369222B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/18—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere
    • B60T15/20—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere controlled by two fluid pressures
    • B60T15/22—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere controlled by two fluid pressures with one or more auxiliary valves, for braking, releasing, filling reservoirs

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Regulating Braking Force (AREA)

Abstract

Bei einem Überwachungsventil (Sperr- oder Drosselventil) für Steuerventile von Fahrzeugen, insbesondere Anhängersteuerventile, ist ein durch den Steuerdruck des Steuerventils beaufschlagbarer Kolben (3) vorgesehen, welcher bei jeder Druckbeaufschlagung eine Zwangsbewegung ausführt, bevor die Reaktions- bzw. Gegenkraft des am Steuerventil ausgesteuerten Druckes zur Anwedung kommt und die Zwangsbewegung beendet. Zu diesem Zweck kommt der an der Gegenseite des Kolbens (3) wirkende Reaktionsdruck, d.h. der ausgesteuerte Druck des Steuerventils erst dann zur Wirkung, wenn ein weiterer, vom gleichen Stößel (7) wie der Kolben (3) getragener Gegenkolben (19) an einem Anschlag anliegt und folglich der ausgesteuerte Druck des Steuerventils voll an der Gegen- bzw. Reaktionsfläche des Kolbens (3) zur Wirkung gelangt. Das Ausschalten des Gegenkolbens (19) erfolgt erst, nachdem der Kolben (3) mit der von ihm getragenen Dichtung (29) einen vorgegebenen Weg durchfahren hat. In gleicher Weise unterliegen die Dichtungen (33) am Außenumfang des mit dem Kolben verbundenen Stößels (7) als auch die am Außenumfang des Gegenkolbens (19) geführte Dichtung (31) dieser Zwangsbewegung. With a monitoring valve (check valve or throttle valve) for Control valves of vehicles, in particular trailer control valves, is a pressurizable by the control pressure of the control valve Piston (3) is provided, which one at each pressurization Forces to execute before the reaction or counterforce of the Control valve comes under pressure and the application Forced movement ended. For this purpose it comes on the opposite side of the piston (3) acting reaction pressure, i.e. the modulated Pressure of the control valve only takes effect when another, counter-piston carried by the same tappet (7) as the piston (3) (19) abuts a stop and consequently the modulated pressure of the control valve fully on the counter or reaction surface of the Piston (3) comes into effect. Switching off the opposing piston (19) takes place only after the piston (3) with the one it carries Seal (29) has traveled a predetermined path. In the same In this way, the seals (33) on the outer circumference are subject to the Piston connected plunger (7) and on the outer circumference of the Counter-piston (19) guided seal (31) this forced movement.

EP89119903A 1988-11-18 1989-10-26 Monitoring valve for control valves, especially for trailer control valves in brake systems of utility vehicles Expired - Lifetime EP0369222B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3839111A DE3839111A1 (en) 1988-11-18 1988-11-18 MONITORING VALVE FOR CONTROL VALVES, ESPECIALLY FOR TRAILER CONTROL VALVES IN BRAKE SYSTEMS OF COMMERCIAL VEHICLES
DE3839111 1988-11-18

Publications (3)

Publication Number Publication Date
EP0369222A2 EP0369222A2 (en) 1990-05-23
EP0369222A3 true EP0369222A3 (en) 1991-06-19
EP0369222B1 EP0369222B1 (en) 1993-01-13

Family

ID=6367471

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89119903A Expired - Lifetime EP0369222B1 (en) 1988-11-18 1989-10-26 Monitoring valve for control valves, especially for trailer control valves in brake systems of utility vehicles

Country Status (2)

Country Link
EP (1) EP0369222B1 (en)
DE (2) DE3839111A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9821779B2 (en) 2015-11-18 2017-11-21 Bendix Commercial Vehicle Systems Llc Controller and method for monitoring trailer brake applications

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2419755A1 (en) * 1975-05-09 1975-11-13 Bosch Gmbh Robert Pressure control valve for trailer pneumatic brakes - isolates trailer supply when trailer brake line broken, for hold-off brake operation
FR2270131A2 (en) * 1973-11-30 1975-12-05 Gachot Jean Vehicle air brake safety valve - is arranged so that trailer braking takes place when normal pressure drops or if trailer breaks away
EP0169303A2 (en) * 1984-07-26 1986-01-29 WABCO Westinghouse Fahrzeugbremsen GmbH Trailer control valve

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1287957B (en) * 1963-02-27 1900-01-01
DE2544767A1 (en) * 1974-04-24 1977-04-21 Bosch Gmbh Robert THROTTLE VALVE
DE2449178B2 (en) * 1974-10-16 1978-01-19 Zweileitungs-Zweikreisbremsanlage Wabco Westmghouse GmbH, 3000 Hannover TWO-LINE DOUBLE-CIRCUIT BRAKE SYSTEM

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2270131A2 (en) * 1973-11-30 1975-12-05 Gachot Jean Vehicle air brake safety valve - is arranged so that trailer braking takes place when normal pressure drops or if trailer breaks away
DE2419755A1 (en) * 1975-05-09 1975-11-13 Bosch Gmbh Robert Pressure control valve for trailer pneumatic brakes - isolates trailer supply when trailer brake line broken, for hold-off brake operation
EP0169303A2 (en) * 1984-07-26 1986-01-29 WABCO Westinghouse Fahrzeugbremsen GmbH Trailer control valve

Also Published As

Publication number Publication date
DE3839111A1 (en) 1990-05-23
DE58903285D1 (en) 1993-02-25
EP0369222B1 (en) 1993-01-13
DE3839111C2 (en) 1992-04-23
EP0369222A2 (en) 1990-05-23

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